Use steady clock in SeedStrengthen and FindBestImplementation

ci/test/06_script_b.sh

@@ -50,12 +50,14 @@ if [ "${RUN_TIDY}" = "true" ]; then
           " src/node/chainstate.cpp"\
           " src/node/chainstatemanager_args.cpp"\
           " src/node/mempool_args.cpp"\
+          " src/node/minisketchwrapper.cpp"\
           " src/node/utxo_snapshot.cpp"\
           " src/node/validation_cache_args.cpp"\
           " src/policy/feerate.cpp"\
           " src/policy/packages.cpp"\
           " src/policy/settings.cpp"\
           " src/primitives/transaction.cpp"\
+          " src/random.cpp"\
           " src/rpc/fees.cpp"\
           " src/rpc/signmessage.cpp"\
           " src/test/fuzz/txorphan.cpp"\